Quality assurance test and Failure Analysis of SiPM Arrays of GECAM Satellites

D.L. Zhang,Min Gao,Xilei Sun,X.Q. Li, Zhongfu An, X. Y. Wen,C. Cai,Zhi Chang, G. Chen, C. Chen,Yan-Qi Du,Ruihong Gao,Ke Gong,D. Y. Guo,J. He,Dongjie Hou,Y.G. Li,C.Y. Li,G. Li,L. Li,X.F. Li,M.S. Li,X. H. Liang, X.J. Liu,Y.Q. Liu,Fangjun Lu,H. Lu,Bin Meng, W. X. Peng,Feng Shi,H. Wang,J.Z. Wang,Y.S. Wang,H.Z. Wang,X. Y. Wen,Shuo Xiao, Shaoxiang Xiong,Y. B. Xu,Ying Xu, S. Yang,Jiajia Yang,Fan Zhang,S.N. Zhang,C.Y. Zhang,C.M. Zhang,Fei Zhang, Xiaojian Zhao,Xiaojuan Zhou

arXiv (Cornell University)（2021）

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摘要

The Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor (GECAM) satellite consists of two small satellites. Each GECAM payload contains 25 gamma ray detectors (GRD) and 8 charged particle detectors (CPD). GRD is the main detector which can detect gamma-rays and particles and localize the Gamma-Ray Bursts (GRB),while CPD is used to help GRD to discriminate gamma-ray bursts and charged particle bursts. The GRD makes use of lanthanum bromide (LaBr3) crystal readout by SiPM. As the all available SiPM devices belong to commercial grade, quality assurance tests need to be performed in accordance with the aerospace specifications. In this paper, we present the results of quality assurance tests, especially a detailed mechanism analysis of failed devices during the development of GECAM. This paper also summarizes the application experience of commercial-grade SiPM devices in aerospace payloads, and provides suggestions for forthcoming SiPM space applications.

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关键词

sipm arrays,gecam,failure analysis

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